public class CodeStandard {
   public static void main(String [] args){
      StringBuffer buffer = new StringBuffer();
      buffer.append('S');
      buffer.append("tringBuffer");
      System.out.println(buffer.charAt(1));
      System.out.println(buffer.capacity());
      System.out.println(buffer.indexOf("tring"));
      System.out.println("buffer = " + buffer.toString());
      if(buffer.capacity()<20)
         buffer.append("1234567");
      for(int i=0; i<buffer.length();i++)
         System.out.println(buffer.charAt(i));
   }
}